1929

6.5

1953

7.7

1958

7.6

1984

8.0

1998

7.4

1957

8.5

1966

7.7

1989

7.2

1996

6.8

1932

0.0

1940

5.2

1936

0.0

1992

7.5

1929

7.5

2002

7.1

1948

7.9

2006

6.9

2005

6.8

1974

7.0

1961

7.2